Question

What will be the number of photons with wavelength of 400 nm to produce 1.6 joule energy... ​

Answer 1

Solution is in the attachment

Answer 2

Answer:

Explanation:

n=400×1.6×10^-9/2×10^-25

n=2000×16×10^-5

n=32×10^-6×10^25

n=32×10^19

Hope it will help you